On Fri, Apr 17, 2015 at 08:44:20AM +0200, Thorsten Leemhuis wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA512 > > On 16.04.2015 14:12, Josh Boyer wrote: > > On Thu, Apr 16, 2015 at 6:17 AM, James Harrison > > <jamesaharrisonuk@xxxxxxxxxxx> wrote: > >> I took the src RPM from rawhide and compiled it in F21 x86_64.. > > For what purpose? > > I do something like that to help testing a new kernel version before > it hits updates-testing. You could pull it out of koji too though. > > Also, generally you don't have to rebuild the kernel just because > > it is an older Fedora release. I test rawhide/F22 kernel RPMs on > > top of F21 userspace daily. > > It might be a issue for those few that want to or have to compile > modules for that kernel -- or is it possible these days to use gcc 4.9 > to compile modules for a kernel that was compiled with gcc 5.0? Right, that's why I asked James why he rebuilt things. Out of tree modules would require a rebuild against whatever kernel version you have locally. As far as I know, you still have to have matching compiler versions between your kernel and modules. Aside from that, I can't think of any major reason to rebuild unless you're modifying the code (or you think there's a compiler bug). josh _______________________________________________ kernel mailing list kernel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/kernel
